ALSA: hda - Support auto-mic switching with IDT/STAC codec
Support the automatic mic-switching with some devices with IDT/STAC
codecs. The condition is that the device has only two inputs, one
for an external mic and one for an internal mic.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 307e86c..f39dc98 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -40,6 +40,7 @@
STAC_INSERT_EVENT,
STAC_PWR_EVENT,
STAC_HP_EVENT,
+ STAC_MIC_EVENT,
};
enum {
@@ -176,6 +177,12 @@
struct snd_jack *jack;
};
+struct sigmatel_mic_route {
+ hda_nid_t pin;
+ unsigned char mux_idx;
+ unsigned char dmux_idx;
+};
+
struct sigmatel_spec {
struct snd_kcontrol_new *mixers[4];
unsigned int num_mixers;
@@ -187,6 +194,7 @@
unsigned int hp_detect: 1;
unsigned int spdif_mute: 1;
unsigned int check_volume_offset:1;
+ unsigned int auto_mic:1;
/* gpio lines */
unsigned int eapd_mask;
@@ -243,6 +251,9 @@
unsigned long *capsws; /* amp-mute attr: HDA_COMPOSE_AMP_VAL() */
unsigned int num_caps; /* number of capture volume/switch elements */
+ struct sigmatel_mic_route ext_mic;
+ struct sigmatel_mic_route int_mic;
+
const char **spdif_labels;
hda_nid_t dig_in_nid;
@@ -1304,7 +1315,7 @@
if (err < 0)
return err;
}
- if (spec->num_dmuxes > 0) {
+ if (!spec->auto_mic && spec->num_dmuxes > 0) {
stac_dmux_mixer.count = spec->num_dmuxes;
err = snd_hda_ctl_add(codec,
snd_ctl_new1(&stac_dmux_mixer, codec));
@@ -2950,6 +2961,8 @@
struct snd_kcontrol_new *knew;
struct hda_input_mux *imux = &spec->private_imux;
+ if (spec->auto_mic)
+ return 0; /* no need for input source */
if (!spec->num_adcs || imux->num_items <= 1)
return 0; /* no need for input source control */
knew = stac_control_new(spec, &stac_input_src_temp,
@@ -3557,14 +3570,26 @@
"Digital Mic 3", "Digital Mic 4"
};
+static int get_connection_index(struct hda_codec *codec, hda_nid_t mux,
+ hda_nid_t nid)
+{
+ hda_nid_t conn[HDA_MAX_NUM_INPUTS];
+ int i, nums;
+
+ nums = snd_hda_get_connections(codec, mux, conn, ARRAY_SIZE(conn));
+ for (i = 0; i < nums; i++)
+ if (conn[i] == nid)
+ return i;
+ return -1;
+}
+
/* create playback/capture controls for input pins on dmic capable codecs */
static int stac92xx_auto_create_dmic_input_ctls(struct hda_codec *codec,
const struct auto_pin_cfg *cfg)
{
struct sigmatel_spec *spec = codec->spec;
struct hda_input_mux *dimux = &spec->private_dimux;
- hda_nid_t con_lst[HDA_MAX_NUM_INPUTS];
- int err, i, j;
+ int err, i;
char name[32];
dimux->items[dimux->num_items].label = stac92xx_dmic_labels[0];
@@ -3574,7 +3599,6 @@
for (i = 0; i < spec->num_dmics; i++) {
hda_nid_t nid;
int index;
- int num_cons;
unsigned int wcaps;
unsigned int def_conf;
@@ -3583,17 +3607,10 @@
continue;
nid = spec->dmic_nids[i];
- num_cons = snd_hda_get_connections(codec,
- spec->dmux_nids[0],
- con_lst,
- HDA_MAX_NUM_INPUTS);
- for (j = 0; j < num_cons; j++)
- if (con_lst[j] == nid) {
- index = j;
- goto found;
- }
- continue;
-found:
+ index = get_connection_index(codec, spec->dmux_nids[0], nid);
+ if (index < 0)
+ continue;
+
wcaps = get_wcaps(codec, nid) &
(AC_WCAP_OUT_AMP | AC_WCAP_IN_AMP);
@@ -3620,6 +3637,88 @@
return 0;
}
+static int check_mic_pin(struct hda_codec *codec, hda_nid_t nid,
+ hda_nid_t *fixed, hda_nid_t *ext)
+{
+ unsigned int cfg;
+
+ if (!nid)
+ return 0;
+ cfg = snd_hda_codec_get_pincfg(codec, nid);
+ switch (get_defcfg_connect(cfg)) {
+ case AC_JACK_PORT_FIXED:
+ if (*fixed)
+ return 1; /* already occupied */
+ *fixed = nid;
+ break;
+ case AC_JACK_PORT_COMPLEX:
+ if (*ext)
+ return 1; /* already occupied */
+ *ext = nid;
+ break;
+ }
+ return 0;
+}
+
+static int set_mic_route(struct hda_codec *codec,
+ struct sigmatel_mic_route *mic,
+ hda_nid_t pin)
+{
+ struct sigmatel_spec *spec = codec->spec;
+ struct auto_pin_cfg *cfg = &spec->autocfg;
+ int i;
+
+ mic->pin = pin;
+ for (i = AUTO_PIN_MIC; i <= AUTO_PIN_FRONT_MIC; i++)
+ if (pin == cfg->input_pins[i])
+ break;
+ if (i <= AUTO_PIN_FRONT_MIC) {
+ /* analog pin */
+ mic->dmux_idx = 0;
+ i = get_connection_index(codec, spec->mux_nids[0], pin);
+ if (i < 0)
+ return -1;
+ mic->mux_idx = i;
+ } else {
+ /* digital pin */
+ mic->mux_idx = 0;
+ i = get_connection_index(codec, spec->dmux_nids[0], pin);
+ if (i < 0)
+ return -1;
+ mic->dmux_idx = i;
+ }
+ return 0;
+}
+
+/* return non-zero if the device is for automatic mic switch */
+static int stac_check_auto_mic(struct hda_codec *codec)
+{
+ struct sigmatel_spec *spec = codec->spec;
+ struct auto_pin_cfg *cfg = &spec->autocfg;
+ hda_nid_t fixed, ext;
+ int i;
+
+ for (i = AUTO_PIN_LINE; i < AUTO_PIN_LAST; i++) {
+ if (cfg->input_pins[i])
+ return 0; /* must be exclusively mics */
+ }
+ fixed = ext = 0;
+ for (i = AUTO_PIN_MIC; i <= AUTO_PIN_FRONT_MIC; i++)
+ if (check_mic_pin(codec, cfg->input_pins[i], &fixed, &ext))
+ return 0;
+ for (i = 0; i < spec->num_dmics; i++)
+ if (check_mic_pin(codec, spec->dmic_nids[i], &fixed, &ext))
+ return 0;
+ if (!fixed || !ext)
+ return 0;
+ if (!(get_wcaps(codec, ext) & AC_WCAP_UNSOL_CAP))
+ return 0; /* no unsol support */
+ if (set_mic_route(codec, &spec->ext_mic, ext) ||
+ set_mic_route(codec, &spec->int_mic, fixed))
+ return 0; /* something is wrong */
+ return 1;
+}
+
/* create playback/capture controls for input pins */
static int stac92xx_auto_create_analog_input_ctls(struct hda_codec *codec, const struct auto_pin_cfg *cfg)
{
@@ -3837,6 +3936,14 @@
spec->autocfg.line_outs = 0;
}
+ if (stac_check_auto_mic(codec)) {
+ spec->auto_mic = 1;
+ /* only one capture for auto-mic */
+ spec->num_adcs = 1;
+ spec->num_caps = 1;
+ spec->num_muxes = 1;
+ }
+
for (i = 0; i < spec->num_caps; i++) {
err = stac92xx_add_capvol_ctls(codec, spec->capvols[i],
spec->capsws[i], i);
@@ -4264,6 +4371,10 @@
for (i = 0; i < cfg->hp_outs; i++)
stac_toggle_power_map(codec, cfg->hp_pins[i], 1);
}
+ if (spec->auto_mic) {
+ if (enable_pin_detect(codec, spec->ext_mic.pin, STAC_MIC_EVENT))
+ stac_issue_unsol_event(codec, spec->ext_mic.pin);
+ }
for (i = 0; i < AUTO_PIN_LAST; i++) {
hda_nid_t nid = cfg->input_pins[i];
if (nid) {
@@ -4601,6 +4712,25 @@
}
}
+static void stac92xx_mic_detect(struct hda_codec *codec)
+{
+ struct sigmatel_spec *spec = codec->spec;
+ struct sigmatel_mic_route *mic;
+
+ if (get_pin_presence(codec, spec->ext_mic.pin))
+ mic = &spec->ext_mic;
+ else
+ mic = &spec->int_mic;
+ if (mic->dmux_idx)
+ snd_hda_codec_write_cache(codec, spec->dmux_nids[0], 0,
+ AC_VERB_SET_CONNECT_SEL,
+ mic->dmux_idx);
+ else
+ snd_hda_codec_write_cache(codec, spec->mux_nids[0], 0,
+ AC_VERB_SET_CONNECT_SEL,
+ mic->mux_idx);
+}
+
static void stac_issue_unsol_event(struct hda_codec *codec, hda_nid_t nid)
{
struct sigmatel_event *event = stac_get_event(codec, nid);
@@ -4623,7 +4753,15 @@
switch (event->type) {
case STAC_HP_EVENT:
stac92xx_hp_detect(codec);
- /* fallthru */
+ break;
+ case STAC_MIC_EVENT:
+ stac92xx_mic_detect(codec);
+ break;
+ }
+
+ switch (event->type) {
+ case STAC_HP_EVENT:
+ case STAC_MIC_EVENT:
case STAC_INSERT_EVENT:
case STAC_PWR_EVENT:
if (spec->num_pwrs > 0)
